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texhex / BiosSledgehammer

Automated BIOS, ME, TPM firmware update and BIOS settings for HP devices
Apache License 2.0
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Disable TXT require shutdown? #76

Closed JohFro closed 6 years ago

JohFro commented 6 years ago

Hi, I’m trying to do TPM firmware upgrade using SCCM task sequence on HP EliteBook Folio 1040 G3 with bios version 01.33. I have trouble disabling TXT before the TMP firmware upgrade and the task sequence fails. When running the BiosConfigUtility64.exe /set:"1040G3.txt" /cspwdfile:"pwd.bin" from inside Windows I get the message: <REBOOT msg=”Reboot required to perform BIOS settings update. May need to shutdown if settings not take effect.” If I reboot the computer the TXT setting is not disabled, if I do a shutdown the TXT setting gets disabled, does someone have any suggestion how to disable TXT (and VTx) without doing a shutdown of the computer?

From settings file: Trusted Execution Technology (TXT) Disable Enable Virtualization Technology (VTx) Disable Enable

texhex commented 6 years ago

Where do you use BIOS Sledgehammer in this process?

JohFro commented 6 years ago

Hi Texhex, I´m not using the Sledghammer (yet) I found the project when searching for a solution on my problem and this site seemed to have done serious testing of a lot of HP models and settings. Is the shutdown requirement to disable TXT anything you also have experienced?

texhex commented 6 years ago

OK, understood. For some settings to apply the HP BIOS requires a restart because the change happens only during POST and not while the BIOS is already started. No way around it.

I will close this issue now because it's out of scope. Please feel free to open a new one in case you have a question about BIOS Sledgehammer.